Looking for a Compact PWM Speed Controller for My Project
Hey everyone! I'm in search of a really small PWM speed controller that can work with a 3.7V lithium battery. Ideally, it needs to be no larger than…
DIY electronics
Can I Build My Own Custom Phone from Parts?
I'm curious if it's feasible for someone to build a custom phone by combining parts from different devices into a single unit. For example, I envision creating a…
How Can I Read the IR Signal from My TV Remote?
I'm looking to read the IR signal from my television remote control because I want to use it to control a homemade project. Any tips or advice on…
Can USB Connections Work for Data Transfer Over Optical Without Audio?
Hey everyone! I'm currently taking an engineering class and I'm exploring optical connections for my final project. I'm curious if there's a way to connect USB to optical…
DIY Analog Volt, Amp, and Ohm Meters: How Do I Build Them from Scratch?
I'm looking to create some analog voltmeters, ammeters, and ohm meters using basic principles without any integrated circuits. This project needs to be accessible, similar to what you…
How can I set up a trigger to play a football anthem when my buddy's team scores?
My friend wants to automate playing a football anthem whenever his team scores a goal. He imagines a setup where a button, possibly a remote or a separate…
How Can I Build a Custom Dumb Phone Using a Nokia 3310?
Hey folks! I'm looking to create a custom dumb phone that can make calls and send texts. My plan is to build a new circuit board that fits…
How Can I Use My Grass Pen With a Broken Battery?
I'm trying to figure out how to bypass the battery in my grass pen since it's broken. Ideally, I want to be able to use it while connected…
Can I Build My Own Handheld Retro Emulator Using a Raspberry Pi 4?
I'm curious if anyone here has experience with making a handheld retro emulator using a Raspberry Pi 4. If so, could you also simplify the controller design? I'd…
What's the Best Way to Use MOSFETs for My E-Bike Power Switch?
I'm looking to create a main power switch for my electric bike, which has a motor controller capable of handling 70A continuously, though it usually operates around 30-40A.…
How to Wire 6 12V Batteries for a 36V Setup?
I'm looking to expand my battery bank from 4 to 6 batteries and need help figuring out how to wire them together to achieve a 36V output. Currently,…
Can I Use a 5-Way Switch for My Strobe Light Bar?
I'm working on my strobe light bar project and I'm considering simplifying my setup by using a 5-way rotary appliance switch instead of multiple toggle switches. I found…
Can I Use TP4056 Modules in Parallel for 3A Charging?
I'm curious if using multiple TP4056 modules in parallel is a valid setup for charging three 18650 cells in parallel (1S3P configuration). Would this approach eliminate the need…
Is It Possible to Power a Shaver Directly with a Power Bank Instead of Using Its Battery?
I've got a few USB-powered shavers, but one of them recently stopped working. I'm wondering if there's a way to bypass the battery and power the device directly…
Best Ways to Make a Halloween Mask with Moving Parts?
I'm working on a Halloween costume and need some advice on making a mask with a mouth that can open downward by about 2-4 inches. I want it…
Dealing with Buzzing from a Boombox Upgrade
Hey folks! I've been trying to breathe new life into my old boombox by adding a budget Bluetooth and USB audio module I found online. I've thoroughly dismantled…
What’s the best way to power my cosplay helmet's 5V and 9V components?
I'm working on a cosplay helmet that has an Arduino for controlling LEDs (5V), a voice modulator (4.5-5V), an amplifier (~9V), and some fans (9-12V). Currently, I'm using…
How Can I Power My Orange Pi 5B (5V 4A) from My Car Battery?
I'm looking to power my Orange Pi 5B, which requires 5V at 4A, directly from my car's 12V battery. I have access to the battery's cables and can…
Can a Peltier Module Cool a Shoe Box Below 60°C?
Hey everyone! I'm curious if a Peltier module can actually cool a shoebox to below 60°C when the outside air temperature is also at 60°C. I've got passive…
Can I Replace the Power Plug on My Dog-Damaged Tower Fan?
Hey everyone! I have a LASKO Tower fan that's about 35 inches tall, and my new Belgian Malinois decided to chew off the wall plug from the power…